w3schools css stylesheet code example
Example 1: external css
<html>
<head>
<link rel="stylesheet" type="text/css" href="mystyle.css"></link>
</head>
<body>
Example 2: css
/* Answer to "css" */
/*
Cascading Style Sheets (CSS) is a style sheet language used for
describing the presentation of a document written in a
markup language like HTML.
In other words, it's the style of the website.
For example, the positioning of everything on a website or
the colour, shape, size of a button. Every design on a
website is most likely made using css.
*/